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At Google's annual I/O conference keynote, the theme was Android everywhere. The search giant's operating system will now show up and move seamlessly through your Android devices of all sizes -- smartphone, TV (whether it's on or off), smartwatch, car and fitness tracker.

With the announcements of Android TV, Android Wear, Android Auto and Google Fit, developers (and, eventually, consumers) can now think of the way apps span devices of all sizes and uses.

The presentation spanned a wide range of products -- with notable exceptions of Google+ and Google Glass -- was interrupted twice by protesters who stood up and began shouting about the company's ethics, and closed with an Oprah-like giveaway: smartwatches for all.

Original live blog and product details below:

annual developer conference is just beginning, and we're minutes away from the beginning of the keynote address. Forbes will be liveblogging the event, so refresh this post throughout the address for updates.

8:54 a.m. Attendees and press are pouring into the hall, waiting for the address to start. Some people ran to get a seat, their Google Glass glowing as they recorded a video at the same time.

Minutes ago, something let out a very loud and sustained honk, like a leaned-on car horn. There's also a large, strange Rube-Goldberg-like mechanical clock with huge spinning wheels and gears that appears to be ticking down to the beginning of the address.

8:59 a.m. Horn honked again, to cheers. We must really be tired of waiting if we applaud a honk.

9:10 a.m. After a Rube-Goldbergian intro video, we have senior vice president and head of Android Sundar Pichai on the stage. He's largely expected to be leading this year's I/O.

9:12 a.m. Pichai said I/O's audience is 20 percent women this year, up from 8 percent last year.

9:17 a.m. Android One: Pichai announces an initiative to offer a sub-$100 Android phones for developing countries with features important to those areas: FM radio, removable SIM.

9:21 a.m. Matias Duarte, director of Android OS, is on stage to talk about "L," or Lollipop, Android's newest version. He's announcing changes to design features that allow for an "elevation" of pixels, so that interfaces have depth. "In the real world, every small change and position in depth creates subtle but important change sin lighting and shadow."

Duarte is emphasizing changes that will be consistent across all platforms -- including watches, he said. " It's delightful when your touch is rewarded with motion."

9:29 a.m. David Burke, Android's engineering director, showing off some of the new animations available to developers in the L update. He's big on ripples.

9:34 a.m. Burke announces "personal unlock" feature on L. Burke said users waste lots of time fiddling with phone unlock codes when the phone can know it's in a trusted environment. It can be determined by location settings or proximity to another device, like a smartwatch. Pretty cool demo, but clearly we'll want to make sure it's as secure as a consistent passcode lock. It's Google's answer to thumbprint unlock.

9:42 a.m. More Android changes: more streamlined switches between Chrome pages and apps. The demo is throwing out shoutouts to local foodie havens -- State Bird Provisions, the Ferry Building, Waterbar. Know your audience.

9:45 a.m. Burke is back on stage, giving more updates to L CPU and GPU performance enhancements. Getting into the wonkier stuff here.

9:48 a.m. The demo video meant to show the incredible graphics capabilities on L is marred by some sort of flicker. Burke apologizes for it.

9:53 a.m. A protester! A woman stands up at the front of the audience holding a sign that says "Develop a Conscience" and begins yelling. The woman is escorted out after about 30 seconds. Her sign references Jack Halprin, a Google attorney who is evicting tenants from his home near Dolores Park. His house has been protested before. Impressive that she got in, considering many developers try to attend the conference and can't.